NEW YORK, Jan 20 (Reuters) - U.S. stock index futures rose
modestly on Tuesday as lower growth forecasts from the
International Monetary Fund spurred hopes that central banks
would take more aggressive policy stances to accelerate economic
improvement.

* While the lower forecasts implied less demand for fuel
over the next two years, contributing to another leg lower in
crude oil prices, Wall Street stocks were on track for a second
straight day of gains, after a rally of more than 1 percent on
Friday.

* The IMF lowered its forecasts for global economic growth
in both 2015 and 2016, projecting growth of 3.5 percent this
year and 3.7 percent next year; both forecasts are down by 0.3
percentage points. The IMF advised advanced economies to
maintain accommodative monetary policies to avoid increases in
real interest rates as cheaper oil increases the risk of
deflation.

* U.S. crude futures fell 1.8 percent to $47.80 per
barrel, keeping the commodity - which is down more than 55
percent since June - near its lowest level since 2009.
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